APA (7th ed.) Citation

Helm, R., Mayo, M., Glowen, R., & Kittredge, W. (1994). Robert Helm, 1981-1993. Blaffer Gallery, University of Houston.

Chicago Style (17th ed.) Citation

Helm, Robert, Marti Mayo, Ron Glowen, and William Kittredge. Robert Helm, 1981-1993. Houston, Tex.: Blaffer Gallery, University of Houston, 1994.

MLA (8th ed.) Citation

Helm, Robert, et al. Robert Helm, 1981-1993. Blaffer Gallery, University of Houston, 1994.

Warning: These citations may not always be 100% accurate.